Dadonghia, located 3 kilometers (about 1.9 miles) southeast of downtown Sanya, between Mt. Tuziwei and Mt. Luhuitou, is one of the most popular tropical seaside vacation areas of Hainan Province. This 2.3 kilometer (about 1.4 miles) stretch of crescent-shaped beach offers the glimmering ocean, warm sunshine, white sand and green trees in the Torrid Zone.

This area is great for water activities such as diving, beach sports, bathing and sunbathing. It has everything that makes a great seaside tourist area from great beaches to large shopping squares to entertainment venues. There is a famous diving company that can provide you with scuba diving, ship diving, seabed strolling, speed boat, motorboat, luxury yacht, sail boat, ocean fishing, beach sports and underwater photography. All the activities are well-supervised and perfectly safe. The water temperature here is about 20C degrees even in winter, making it a popular spot to enjoy Hainan's beaches.

The several shopping areas here include the largest Sanya-Ruihai Shopping Park. There is also the Dadonghai Pearl Square, Tropical Rain Forest Square, Seashore Lovers Road and Seafood Barbecue Square. The Seashore Park, about 300 meters (about 328 yards) east along the beach, sits atop a small mountain where you can have a panoramic view of the beach.